Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Tax Disclosure [Abstract]

Components of Income Before Tax

The components of income before provision for income taxes were as follows (in thousands):

	For the Years Ended December 31,
	2011		2010		2009
Domestic	$	257,656	$	235,892	$	221,071
Foreign	49,539		26,480		16,161
Income before provision for income taxes	$	307,195	$	262,372	$	237,232

Schedule of Provision for Income Tax

The provision for income taxes consisted of the following (in thousands):

	For the Years Ended December 31,
	2011			2010		2009
Current tax provision
Federal	$	39,517		$	19,619	$	1,393
State	2,953			4,993		4,229
Foreign	10,193			4,078		3,991
Deferred tax provision (benefit)
Federal	54,980			55,335		76,410
State	4,413			2,393		2,068
Foreign	1,209			4,269		3,238
Change in valuation allowance	(6,974		)	465		(10		)
	$	106,291		$	91,152	$	91,319

Schedule of Difference Between Effective and Statutory

The Company’s effective rate differed from the statutory rate as follows:

	For the Years Ended December 31,
	2011		2010		2009
United States federal income tax rate	35.0	%	35.0	%	35.0	%
State taxes	2.8		2.9		3.7
Nondeductible stock-based compensation	0.8		0.1		1.2
United States federal and state research and development credits	(2.4	)	(2.6	)	(1.4	)
Change in state tax rates	(0.1	)	0.5		—
Foreign earnings	(2.2	)	(0.4	)	0.1
Expiration of capital loss carryforward	2.1		—		—
Other	0.9		(1.0	)	(0.1	)
Change in the deferred tax asset valuation allowance	(2.3	)	0.2		—
	34.6	%	34.7	%	38.5	%

Net Deferred Tax and Valuation Allowance

The components of the net deferred tax asset and the related valuation allowance were as follows (in thousands):

	December 31,
	2011			2010
Net operating loss and credit carryforwards	$	9,323		$	35,202
Depreciation and amortization	30,702			60,935
Compensation costs	35,959			32,221
Impairment loss on marketable securities	—			5,005
Other	15,530			20,782
Deferred tax assets	91,514			154,145
Acquired intangible assets not deductible	(16,972		)	(22,784		)
Internal-use software capitalized	(24,165		)	(20,527		)
Impairment loss on marketable securities	(15		)	—
Deferred tax liabilities	(41,152		)	(43,311		)
Valuation allowance	(433		)	(7,407		)
Net deferred tax assets	$	49,929		$	103,427

Unrecognized Tax Benefits

The following is a roll-forward of the Company’s unrecognized tax benefits (in millions):

	For the Years Ended December 31,
	2011			2010
Unrecognized tax benefits — at beginning of year	$	10.8		$	7.0
Gross increases — tax positions of prior periods	—			1.5
Gross increases — current-period tax positions	2.8			2.3
Gross decreases — tax positions of prior periods	(0.8		)	—
Gross decreases — settlements	(0.3		)	—
Unrecognized tax benefits — at end of year	$	12.5		$	10.8